now months later post-it notes cling to the blackened walls left behind by fbi investigators who finally made it to the crime scene for a single day last week. today's congressional hearings will examine what, if any, mistakes or misjudgments about security led to the attack on september 11th that left four americans dead. >> senior correspondents john miller is a former fbi deputy director and is with us this morning. john, big hearings on capital hill today. new information released last night. first we learn 230 specific security incidents in libya between june 2011 and july 2012. was there enough security? >> and that is going to be the burning question at the hearing today. i think when you look at, you know -- i've been going through these reports all night. this is a 230 incidents. when you get to page 51 of that there's a very interesting quote. it says, the risk of u.s. mission personnel, private u.s. citizens and business persons encountering an isolating event as a result of militia and political violence is high, in capital letters. the government of libya does not yet have t